Lightstat e-stat Owner's manual

2-Way Communicating Thermostat
Hardware Installation and Operation Manual
Intended for connection to
Class 2 Circuit(s) Only (24 VAC)
Common Wire is Required
Manufactured by:
Lightstat Inc.
Barkhamsted, CT
www.lightstat.com
.....INSTALLERS....
CONTACT LIGHTSTAT FOR ACTIVATION
1-800-292-2444
For e-Stat™Model Thermostat

1
Supply
Ductwork Return
Ductwork
Roof Top Unit #1
Retail or restaurant
interior area
Your existing POS
computer and/or
network connection
e-Stat
Remote Room Sensor
Hub
Remote supply sensor is
located in supply ductwork
2-conductor
#18 low voltage
cable
2-conductor
#18 low voltage
cable
Existing
8-conductor
#18 low voltage
cable
Cat 6
cable
e-Stat Typical Wiring Configuration
1. Typically, the e-Stat™should be located within
a few feet of the network equipment such as the
network switch. It may be located farther. The
maximum Cat 6 cable run is 328 ft
(100 meters).
2. Mount the Remote Room Sensor on a wall or
column in the conditioned space, away from
windows, doors and supply air ducts. (Refer to
page 9 for more instructions.)
3. Mount the Supply Air Sensor in the supply air
duct as close to the HVAC unit as possible.
(Refer to page 10 for more instructions.)
Note: You must use the remote temperature
sensor supplied. The e-Stat™does NOT contain
an onboard temperature sensor.

2
Description:
The e-Stat™is a low voltage, solid state, automatic
changeover, heating/cooling thermostat with digital
display showing setpoints and room temperature.
The e-Stat™is a 2-Way Communicating, remotely
programmable thermostat.
Standard Features:
•Control of up to two stages of heating
and cooling.
• Proportional plus Integral (P+I) control for
accurate, even temperature control.
• Automatic changeover from heating to
cooling with deadband to prevent short
cycling of HVAC equipment.
• Remotely programmable, adjustable deadband.
(5°F is default)
• Remotely congurable Y1, Y2 interstage
differential. (1.5°F is default)
• Intelligent pre-conditioning of the controlled
space prior to the start of the workday.
• Automatic randomized delay to prevent power
surges at power up. (4 to 12 minutes)
• Backlit display for easy viewing in low light
conditions.
•Support for optional humidity sensing.
•Contact Closure terminal input to monitor switch
closure.
• Limited Lifetime Warranty.
General:
Voltage Rating (min, max).........................20 to 30 VAC
Current Draw (typ).............................285 mA @ 24VAC
A1-A2-A3 Relay Load (max)................1 Amp @ 24VAC
G, Y1, Y2, W1, W2, O/B Load (max)...1 Amp @24VAC
Network:
Cabling........................Cat6 (UTP) with RJ45 connector
Ethernet....................................10/100BT Auto-Sensing
Wiring Cable Distance (Max).................................328 ft

Inside View - Door (Left)
Inside View - Base (Right)
ON
1 2 3
This th ermostat receive s programming via
E thernet cable connection .
S ome limited temperature adjustment MAY
or MAY NOT be allowed via the UP and
DOWN buttons .
TEC H SUPPOR T 800-292-2444
P leasant Valley , C T
OFF ON
1
2
3
1
2
3
-Move to ON fo r ga s he at . F an contr olle d
by limit switch .
-L eave OFF for f an controlled by Light stat
in heat cycle (typical for electric heat ).
-Move to ON for no compressor time delays .
-L eave OFF for 3 minute compressor minimum r un
and minimum o time delays .
-Move to ON to increase the Heating (W1-W2) di erential
to 3 degrees for m ore e cient Heat Pump operation .
-L eave OFF for (W1-W 2) di erential of 1.5 degrees ,
typically used with Ele ctric or Gas heat .
W RA P 00003 R EV . ?
S WI TCH SE TTINGS
3

Connecting the Outputs
Caution: Risk of Electrical Shock - More than one
disconnect switch may be provided. Disconnect
all power to device before servicing.
Remove the old thermostat from the wall taking note of
the wire colors on the back of the mounting kit
provided. Thread the thermostat cable through the
hole in the back of the e-Stat™. Mount the e-Stat™
securely to the wall using the hardware provided.
The e-Stat™should be leveled for cosmetic reasons.
GENERAL HVAC WIRING DIAGRAM
e-Stat
G
R
Y1
W1
W2
C
O
Y2
B
CLASS 2 XFMR
SYSTEM
TRANSFORMER
HVAC
EQUIPMENT
TERMINAL
STRIP
20-30 VAC
ONLY
A2
A1
A3
G
R
Y1
W1
W2
C
O
Y2
B
MAY BE USED
FOR NIGHT
SHUTDOWN
OF DAMPERS
OR OTHER
EQUIPMENT.
RELAY LOAD:
1 A MP (MAX)
@ 24V AC
CONNECT
AS REQUIRED
BY HVAC
EQUIPMENT
A1-A2-A3
C ONTACT
TERMINALS
ON e-Stat
FAN
HEAT 1
20-30 VAC ONLY
(C OMMON)
(COMMON)
HEAT PUMPS
MAY REQUIRE
JUMPER
BETWEEN Y1
AND W1 TO
BRING ON
COMPRESSOR IN
BOTH HEATING
AND COOLING.
(SEE NOTES ON
PAGE 5) HEAT 2
COOL 1
COOL 2
4

R-Hot Wire; one side of the control (20 - 30 VAC)
transformer. If two hot wires are present (as with RC and RH)
determine if they come from separate transformers. The e-Stat™
must be installed on a single transformer
system.
G - Fan Wire.
W1 - First stage of heating.
Y1 -First stage of cooling.
When conventional rooftop equipment is selected, the interstage
differential is always 1.5°F. With heat pump switch #1 set to “ON”,
the interstage differential is 3.0°F for heating stages and 1.5°F for
cooling stages. (If using a humidity sensor, interstage differential
will increase during cooling to compensate for high humidity
conditions.)
C - Common or Neutral side of transformer. This must be
connected for the e-Stat™to operate.
W2 -Second stage of Heat or Auxiliary heat with heat pumps.
Y2 - Second stage of cooling.
O- This output will be active with a call for cooling.
Often used for heat pump reversing valve.
B- This output will be active with a call for heating.
(Connect O & B outputs as required by the HVAC equipment.)
Note: When connecting to a heat pump with Thermostat
Reversing Valve Control you will need to install a jumper
wire between W1 and Y1 at the e-Stat™. There should be no
connection between W1 on the e-Stat™ and the RTU terminal
strip. Aux heat is connected to W2.
Note: When connecting to a heat pump with Unit Reversing
Valve Control no jumper wire is required as the reversing valve is
positioned by the unit internal controls based on whether cooling
or heating is being called by Y1, Y2 or W1, W2.
A1, A2, A3 are dry contact relay terminals that may be used for
night shutdown of dampers or control of other equipment. This is a
separate relay with isolated contacts.
Relay load: 1 AMP (MAX) @ 24VAC.
Connecting the Outputs
5

A - Indicates day of the week.
B - Signal/Status L.E.D. Indicators.
C - Output designators.
D- Press once to see supply air temp and
“last program” information, 2nd press displays %
relative humidity (if a humidity sensor is in use).
E - Check button. Use to cancel time delays.
F- Temperature up/down buttons.
G - Fan On/Auto button.
H- System power button.
Front View - Front Door Open
Temp
ONFANAUTO
HEATSET
COOLSET
OVERRIDE
NEW PROGRAM
SYSTEM OFF
REL
HUMIDITY ERROR
REMOTE TEMP
MONTUEWEDTHUFRISATSUN
ON
ON
ON
ON
ON
ON
A
P
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
System
On/Off
Check Fan
On/Auto
Read
Sensor
Yellow -
Website
program
active
Red -
Utility Program
active
Press to cancel
Time delays
On – Constant Fan
Auto – Fan only with
Heat / Cool cycle
Press to read
Supply Air Sensor
& Humidity (Optional)
Web controlled thermostat.
Buttons may be disabled.
Tech Support 800-292-2444
Turns entire system off
F
B
H
D
E
G
C
A
6

7
A - Output indicators. Illuminated “ON” and arrow indicates
output is active. Flashing arrow and steady “ON” indicates
output is being held on by time delay. Flashing arrow alone
indicates output is being held off by time delay.
B - Cooling temperature setpoint.
C- Indicates day of the week.
D- Current remote room temperature, supply air temp, or
ambient humidity.
E - REL HUMIDITY will ash to indicate setpoint reduction is
active.
F- Antenna icon indicates that an ethernet carrier is sensed.
G- Remote temperature sensor indicator.
H- Indicates status of hosting server communications.
I - If arrow and “ON” are not illuminated, the output is off.
J - Heating temperature set point.
K - Fan On/Auto indicator.
L- Indicates system is off.
M- Ramp symbol will be illuminated if space is actively being
preheated or precooled.
N - Solid “OVERRIDE” indicates the program has been over-
ridden with the Up/Down buttons if allowed locally. Flashing
“OVERRIDE” indicates remote override.
O - “New Program” will illuminate when “Read Sensor”
button is pressed once (provided thermostat has been
programmed).
P- Indicates AM or PM Local time.
Display Designators
COOLSET
AUTO FAN ON
ON
ON
ON
ON
ON
ON MONTUEWEDTHUFRISATSUN
HEATSET
SYSTEM OFF
OVERRIDE
NEW PROGRAM
ERROR
REMOTE TEMP
REL
HUMIDITY
P
A
Cool 1
Cool 2
Fan
O
Heat 1
Heat 2
H
P
M
CB
JK
A
O
N
GF
E
L
D
I

The e-Stat™is used as a stand-alone thermostat to
control a single HVAC system. Do not attempt to con-
trol more than one HVAC unit with an e-Stat™
A Remote Temperature Sensor MUST BE installed for
the e-Stat™to function properly. A Supply Air Sensor is
optional.
All wiring should be a minimum of #18AWG. Shielding
is not required.
Wiring Layout
8
TYPICAL
ROOFTOP
UNIT
SUPPLY AIR DUCT
S UPPL Y AI R SENSOR
MOUNT ON DISCHARGE AIR DU CT W IT H
P RO BE I N DISCHARGE AIR ST REAM
REMOTE TEMPERATURE AND
HUMIDITY SENSOR
MOU NT IN SPACE TO B E CONT RO LLED
10 WIRE #18A WG
2 WIRE #18A WG
2 WIRE #18A WG
NETWORK
CABLE
DO NOT INSTALL ON THE BOTTOM OF THE DUCT
Cat-6/6e

Remote Sensor Installation
The e-Stat™must have a Remote Temperature Sensor
installed. A Supply Air Sensor is optional. These sensors
are supplied for each thermostat.
Note: See Appendix B for Remote Temperature and
Humidity Sensor.
Use #18 gauge 2-conductor twisted pair cable between the
e-Stat™and the remote sensors. Remote sensors are
unaffected by wire runs of up to 500 feet.
Remote sensors do not have polarity, either wire may be
connected to either terminal. Shielded cable is not required
for remote sensors.
Mount the remote temperature sensor in the area to be
heated and/or cooled. If the remote temperature sensor is
installed where the old thermostat was, use the supplied wall
plate for cosmetic reasons.
Connect the 2-conductor cable to the two terminals marked
Remote Temperature Sensor. These are located in the cen-
ter of the bottom terminal block as seen in the gure below.
Note that this sensor is not designed to be placed into a
moving air stream.
9
Wire Nuts
(supplied)
REMOTE ROOM SENSOR
WIRING DIAGRAM
RELAYS: G, W1, Y1, W2, Y2, O, B,
A1, A2, and A3 rated 24 V ac, 60 Hz,
Class 2, 1A, resistive / pilot duty.
A1-A2-A3 Relay: Normal
position indicated.
Contacts reverse during
Unoccupied (night) mode
or, via OFF signal from
website.
Dry contacts
are isolated.
C1 C2
Contact
Closure
Input
Supply
Air
Sensor
A
1
A
2
A
3
Remote
Room
Temperture
(& Humidity)
Sensor
Non-twisted Pair #18 AWG Wire
500 feet (maximum)
(not supplied)
Remote Room
Temperature
(& Humidity)
Sensor